From 325e713953c5b371797967840f5de62d717e1b8a Mon Sep 17 00:00:00 2001
From: Thomas Vander Stichele <thomas@apestaart.org>
Date: Mon, 16 Jan 2006 15:31:14 +0000
Subject: [PATCH] ext/vorbis/vorbisdec.c: Fix #327216 (null dereference in
 vorbisdec)

Original commit message from CVS:

* ext/vorbis/vorbisdec.c: (vorbis_dec_src_query):
Fix #327216 (null dereference in vorbisdec)
---
 ChangeLog              | 5 +++++
 ext/vorbis/vorbisdec.c | 7 ++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 3c7b176f4e..fd0c66c477 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-01-16  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* ext/vorbis/vorbisdec.c: (vorbis_dec_src_query):
+	  Fix #327216 (null dereference in vorbisdec)
+
 2006-01-16  Tim-Philipp Müller  <tim at centricular dot net>
 
 	* ext/theora/theoradec.c: (theora_handle_comment_packet):
diff --git a/ext/vorbis/vorbisdec.c b/ext/vorbis/vorbisdec.c
index 6b275aba77..7d65c47be3 100644
--- a/ext/vorbis/vorbisdec.c
+++ b/ext/vorbis/vorbisdec.c
@@ -274,7 +274,7 @@ vorbis_dec_src_query (GstPad * pad, GstQuery * query)
 {
   gint64 granulepos;
   GstVorbisDec *dec;
-  gboolean res;
+  gboolean res = FALSE;
 
   dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
 
@@ -307,6 +307,11 @@ vorbis_dec_src_query (GstPad * pad, GstQuery * query)
     case GST_QUERY_DURATION:
     {
       /* query peer for total length */
+      if (!gst_pad_is_linked (dec->sinkpad)) {
+        GST_WARNING_OBJECT (dec, "sink pad %" GST_PTR_FORMAT " is not linked",
+            dec->sinkpad);
+        goto error;
+      }
       if (!(res = gst_pad_query (GST_PAD_PEER (dec->sinkpad), query)))
         goto error;
       break;